Rifled barrel = fixed improved cylinder?
Anyone know? I'm looking at a rifled 870 barrel online and the description merely says: Deer Barrel, improved cylinder, rifle sights.
It says "deer barrel" but nowhere does it flat out say "rifled barrel". Are rifled slug barrels typically fixed at improved cylinder? If so that would suggest this is indeed a rifled barrel.
The thing is, I know some models of the 870 have rifle sights on a short smoothbore.
I ask this because I've never owned a rifled slug barrel. Ideas?